基于同步提取变换与Vold-Kalman滤波的燃机阶次跟踪方法研究  

Order tracking method for gas turbine combined with synchroextracting transform and Vold-Kalman filtering

作　　者：张文海[1] 胡明辉 江志农 冯坤 ZHANG Wen-hai;HU Ming-hui;JIANG Zhi-nong;FENG Kun(Key Lab of Engine Health Monitoring-Control and Networking of Ministry of Education,Beijing University of Chemical Technology,Beijing 100029,China;Beijing Key Laboratory of High-end Mechanical Equipment Health Monitoring and Self-Recovery,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学发动机健康监控及网络化教育部重点实验室,北京100029 [2]北京化工大学高端机械装备健康监控与自愈化北京市重点实验室,北京100029

出　　处：《机电工程》2020年第9期1104-1108,共5页Journal of Mechanical & Electrical Engineering

基　　金：博士后创新人才支持计划资助项目(BX20180031);NSFC-辽宁联合基金资助项目(U1708257);中央高校基本科研业务费专项资金资助项目(JD1913)。

摘　　要：针对管道、船舶、航空等行业使用的燃气轮机转速频繁变化,难以提取振动信号中目标阶次成分的问题,对燃机振动信号阶次跟踪方法进行了研究,提出了一种基于同步提取变换与Vold-Kalman滤波的燃气轮机振动阶次跟踪方法。首先,对振动加速度信号进行了积分,得到了转子工频成分明显的振动速度信号;然后,参考同步性较差的转速数据在振动速度信号中使用同步提取变换的方法,提取了瞬时频率,即同步精确的转子工频;将振动加速度或速度信号与转子工频作为输入,利用Vold-Kalman滤波阶次跟踪方法,提取了目标阶次成分的时域波形;最后,将该方法应用于实际燃机的振动数据分析中。研究结果表明:该方法能够准确、有效地提取出燃机目标阶次时域波形,可为振动状态监测及预警提供数据支撑。Aiming at the problem that gas turbines used in pipelines,ships,aviation and other industries frequently changed the speed,which makes it difficult to extract target order components,the gas turbine vibration order tracking method was studied.A method for order tracking of gas turbine combined with synchro extracting transform and Vold-Kalman filtering was proposed.First,the vibration acceleration signal was integrated to obtain a vibration speed signal with significant rotor power frequency.Then,with the reference of poor synchronization speed data,the SET was used to extract the instantaneous frequency(IF),which was the synchronous and accurate rotor power frequency.Finally,the VKF method was used to extract the target order waveform with the input of vibration signal and rotor power frequency.The method was applied to analysis actual gas turbine vibration data.The results indicate that it can accurately and effectively extract the target order waveform of the gas turbine,which can provide data support for vibration condition monitoring and early warning.

关 键 词：燃气轮机 振动信号 同步提取变换 Vold-Kalman滤波 阶次跟踪 

分 类 号：TH113.1[机械工程—机械设计及理论] U464.3[机械工程—车辆工程]